Calculating the Astronomical Unit (AU), Astronomers observed the Venus transit from various places. Because of the parallax effect, observers like A and B saw Venus's path shifted on the Sun's face. By trigonometry, this shift & the distance between the observers you can determine the distance to Venus. It's about 0.35 AU, so knowing the distance in miles, you can get the length of the AU in miles. Mona Evans, "Transit of Venus - Measuring the Solar System" http://www.bellaonline.com/articles Solar System, Secret Board, Mona Evans, Astronomers Observed, Path Shifted, Sun, 0 35 Au, Venus
"Black drop effect" observed in transit of Venus by Captain Cook and Charles Green. Observers found it hard to work out when the disk of Venus was just fully within the disk of the Sun. This meant the timings varied considerably from observer to observer. (Armagh Observatory) ©Mona Evans, ©Mona Evans, “Transit of Venus – Captain Cook 1769” www.bellaonline.c...
Black Drop, Armagh Observatory, Mona Evans, Varied Considerably, Timings Varied
Transit of Venus 2004 including Venus and a time lapse of the transiting International Space Station. Very few people would have been able to observe this event and the ISS took no more than a second to pass by. Amazing photo by Tomas Maruska (SAAD). ©Mona Evans, "Transit of Venus - Measuring the Solar System" www.bellaonline.c...
Well Situated Photographers, Including Venus, 2004 Including, Photographers Caught, 0 033 Seconds, Unique Time Lapse, Sun
Space Station, Venus, Sun Credit & Copyright: Tomas Maruska (SAAD) - Explanation: On June 8, 2004 - Venus was not the only celestial object to pass in front of the Sun. A few well-situated photographers caught the International Space Station also crossing the Sun simultaneously.
Image of the International Space Station and Venus passing in front of the Sun at the same time
Photo by Tomas Maruska (SAAD). On June 8, 2004, Venus and the International Space Station crossing the Sun simultaneously. A unique time-lapse image of the unprecedented double transit, a rare event that was visible for less than a second from a narrow band on Earth. A combination of 12 frames taken 0.033 seconds apart and each themselves lasting only 1/10,000 th of a second. The image was taken from the small village of Stupava in Slovakia.
Space Station, Venus, Sun
A modern artist’s impression of Captain Cook and astronomer Charles Green observing the 1769 transit of Venus from Tahiti. Although Green is shown looking through the telescope, both Cook and Green observed simultaneously through identical telescopes. The stamp was issued by Tuvalu in 1979 the bicentenary of Cook's death. (photo: Ian Ridpath) Mona Evans, “Transit of Venus – Captain Cook 1769” www.bellaonline.c...
Cook Stamps, James D'Arcy, Stamps Transit, Captain James, Commemorative Stamps
Captain James Cook Stamps Transit of Venus Tuvalu Postage Stamp
James Cook und der Venus-Transit auf Briefmarke von Tuvalu
James Cook, Tuvalu
Transit of Venus June 8, 2004. The planet almost looks like a bit of cloud, but you can find it on the right just below center. (Photo: David Cortner) ©Mona Evans, "Transit of Venus - Measuring the Solar System" www.bellaonline.c...
The Face, David Cortner, Picturesque Venus, Image Credit, Astronomy, Photo, Sun
A Picturesque Venus Transit. The rare transit of Venus across the face of the Sun in 2004 was one of the better-photographed events in sky history.
The rare transit of Venus across the face of the Sun in 2004 was one of the better-photographed events in sky history. Sky enthusiasts worldwide are abuzz about the coming transit of Venus on Tuesday. It is perhaps interesting to wonder whether any person will live to see -- and remember seeing -- both Tuesday's Venus transit (05 June 2012), and the next one in 2117.
It won't happen again until December 2117. On June 5th, 2012, Venus will transit the face of the Sun in an event of both historical and observational importance. The best places to watch are in the south Pacific, but travel is not required Check on map where will be visible → http://goo.gl/0DeZJ Watch video → http://goo.gl/UY1y6 Image Credit & Copyright: David Cortner
THIS EXTRAORDINARY PHOTO from NASA shows the Venus Transit showing the planet crossing the face of the sun in 2004.
The rare transit of Venus across the face of the Sun in 2004 by David Cortner via NASA
Venustransit 2004. Next Transits: Tomorrow! Then again only in 2117!
IMAGE: Venus in sole visa (1639), the account of a transit of Venus observed by Jeremiah Horrocks. It was printed in 1662 by Polish astronomer Johannes Hevelius along with Mercurius in sole visa, his account of a transit of Mercury. "Transit of Venus - Measuring the Solar System" www.bellaonline.c...
Solar System, Sole Visa, Polish Astronomer, Jeremiah Horrocks, Venus Observed, Visa 1639, Astronomer Johannes
Captain Cook memorial at Venus Point, Tahiti. He headed an expedition sent by the Royal Society of England to observe the 1769 transit of Venus. This is where they did the main observations. (Photo: Frederick Sears) ©Mona Evans, “Transit of Venus – Captain Cook 1769” www.bellaonline.c...
Cook Memorial, Royal, Mona Evans, Main Observations, Frederick Sears, 1769 Transit, Pirates Cove
Double transit. In this photo by the brilliant astrophotographer Thierry Legaut, you can see Venus in transit on June 6, 2012. But click to enlarge and you can also see that he has caught the Hubble Space Telescope also crossing in front of the Sun. ©Mona Evans, "Transit of Venus - Measuring the Solar System" www.bellaonline.c...
Astrophotographer Thierry, Photographed By, Australia, Shooting Mode, Telescope Pictures, Hubble Space Telescope, Venus
Astrophotographer Thierry Legault captured Venus and NASA's Hubble Space Telescope (circled) crossing the face of the sun on June 6, 2012. Legault snapped the photo from northeastern Australia; in North America, the Venus transit occurred on June 5-6, 2012.
Thierry Legault: One Transit is Not Enough, Venus took a lazy 6-plus hours to make its transit. A few giant sunspots also join in the view.
THE 2012 TRANSIT OF VENUS... AND THE HUBBLE SPACE TELESCOPE This transit of the HST (Hubble Space Telescope) was taken from Queensland, Australia, simultaneously with the 2012 transit of Venus on June 6th, at 01:42:25 UTC. Thanks to the continuous shooting mode of the Nikon D4 DSLR running at 10 fps, 9 images of the HST were recorded during its 0.9s transit (1/8000s, 100 iso, raw mode). Turbulence was moderate to high.
Venus and Hubble Space Telescope (circled) Cross Sun Together in Double Transit | Space.com
Thierry Legault - Transit of the Hubble Space Telescope during the 2012 transit of Venus
Transit de Venus et du télescope spatial Hubble photographié par Thierry Legault.
THE 2012 TRANSIT OF VENUS... AND THE HUBBLE SPACE TELESCOPE!! [Spaceweather.com]
Venus and Hubble Telescope Cross Sun Together in Spectacular Picture
Transit of Venus 2012. Picture of the transit taken from the Exploratorium live feed. A calcium line solar filter gives it the cool blue color. ©Mona Evans, "Transit of Venus - Measuring the Solar System" www.bellaonline.c...